Onan P220 oil filter gasket

[23 Reo 235]

I am replacing a very old outside oil filter gasket on my Onan P220. It's the gasket  that is placed between the oil filter and the cooling tin. Do I just slide it on to the oil filter and push it until it rests on the tin? A picture would be very helpful.

Edited June 4, 2025 by 23 Reo

[lynnmor 8,726]

48 minutes ago, 23 Reo said:

I am replacing a very old outside oil filter gasket on my Onan P220. It's the gasket  that is placed between the oil filter and the cooling tin. Do I just slide it on to the oil filter and push it until it rests on the tin? A picture would be very helpful.

You are correct.  If you have an oil filter that is a bit small, it may not stay in place.  I use only Onan 122-0800 or Fleetguard LF3339 filters.

[Ed Kennell 45,574]

    If your grommet is dry and cracked, replace it.   If your filter is too small, wrap it with a layer of duct tape.

[kitkit 138]

i am having a problem with getting my gasket on the filter it , it is just too tight to get it on , it is a new to me tractor , it did not have one on it when i got it , not sure what is up ,is it possibe the wrong filter was used 

[Ed Kennell 45,574]

1 hour ago, kitkit said:

,is it possibe the wrong filter was used 

I guess it is possible, but I have never seen a filter that was too big.   Did you try greasing and stretching  the grommet?